Display device required to use QuickSync ?

[pema68]

If and why is a display device required to use QuickSync on 2nd gen Core i7 ?

[Eric_S_Intel]

Its not a MSDK defined requirement. If the SDK can access the device and use it it will. A possible alternative had been discussed in this thread:

http://software.intel.com/en-us/forums/showthread.php?t=86355&o=a&s=lr

Hope it helps..

-Eric

[pema68]

Eric, thanks for teh answre and link. Actually we want to use QuickSync without any display connected, i.e. in a headless mode, just streaming data in over network, transcoding it and streaming it out over network again. So, we neither have a display attached to the intel GPU nor do we have a secondary GPU.

[Ariel_G_Intel]

The last post in the above link shows how to enable QuickSync when the Intel GPU isn't connected.

For HW acceleration work (DXVA), a screen must be connected to the GPU that creates the device. This is a DirectX9 limitation.

What you can do is connect a screen to one port and extend the desptop to another, later remove the actual connection. The trick is to keep the disconnected screen a part of the desktop so DirectX will enumurate it.

Annoying? Yes. But drivers must comply with the OS requirements.